Sylvania



A. SCHMID s; J.- GQBEGKPELD.

(No Model.)

GAS ENGINE.

No. 421,524. Patentd Pebl 18, 1890.

VRQQ QS su @Wi/imam@ UNITED STATES g PATENT OFFICE.

ALBERT*SCllMII)- AND JOHN CI'IARL'ES BCKFELD, OF LLEGIIENIY, PENN-'SYLVNLL4 GAS-'ENGIN El..

I SPEcIFICAVTION'forming part of Letters Eatent No. 421,524, datedFebruary 18,- 1890.

Application filed July 12, 1889. Serial No. 317,278.I (No model.)

To all whom 'may concern."

Be it known that4 live', ALBERT SCH-MID, a

i citizen of the, Republic of Switzerland, and

JOHN: CHARLES BEeKrELD, a citizen of the United States, both residi-ngatAlleghcny, in the county of Allegheny and State of Pennl Sylvania,have invented certain new and'useful Improvements in Gas-Engines, ofwhich the following is a specification, reference being had to thedrawings accompanying and forming a part of the same.-

This invention relates to gas orair and gas engines ofthe type known ascontinuousto be used Iin, 'conjunction With the expanded combustionengines,'and more vparticularly to large engines of said type,}whichrequire the application of force from some independent'source-sueh as asteam-boilor-to start them in operation. i

The object of the invention isv primarily to increase the efficiency-otvsuch engines' by utilizing the 'waste hetiromthe combustion of the gasesto vaporiz'e water or other iuid products of combustion in operating theengine;` secondly, to dispense with an independent steamiboiler forfurnishing the steam to sta'rt the engine, and,rlastly, to improve theengineby'utili'zing'as 'much as possible of the heat developed iny theoperaticnof the.

engine and applying it to assist in furnishing the driving-power. 3

We have illustrated these improvements in the accompanying drawings inconnection with a gas-engine of special character. Any engine,howevenadapted to be operated bya const-ant expansion of gases such astakes place in continuous-combustion engines may be used; We thereforeomit a detailed de scription cf'the engine proper, deemingtit sufficientto say that the special form shown herein is constructed in.substantially the' manner described in an application of J. CharlesBeckfeld and Albert Schmid, filed of even date herewith, and seriallynumbered 317,277. Referring to the drawings, the figure 1s a view 'inside elevation and part section of the entire system or combination ofall the parts and devices pertainingr to our invention.

Let A designate the gas-enginc proper; B, a pipe from the street-11minor other supply of gas, through which gas is admitted or drawn into theengine under one of the pistons and, together with a proper proportionof air, is subsequently forced through a pipo or tube C into acombustion-chamber D, whore it is .ignited and burned.-

E isthc exhaust from the, engine, through which the. products ofcombustion, after having done their work,'are expelled.

1,1 is a pipe from a water-main or othersupply and connecting with a-Wator-jaeket surrounding t'he cylinders and working parts of' theengine. 1

F is the discharge-pipe from the walterjacket. It empties into a: tankG, from whence, by a small pump ll, driven by an eccentric on the mainshaft ot' the engine, it is forced yinto the chamber I. The exhaust-pipeE runs through this chamber, being coiled therein, so that the-heat fromthe exhaustgases is imparted. to the walter therein,

which hasalready-been warmed inthc waby a valve c. The chamber Icommunicates ,with the engine cylinders orpipes M through a pipe 0. l

The combustion-chamber D contains a series of burners L, supplied withgas from the p The pipe C from the engine is'also provided with a seriesof burners' D', fr the combustion of the mixed gas and air supplied bythe engine. 'lho pipe l,'which conveys gas from the main to' t-heburners L, is provided with a check-Valve K', to prevent back-'pressurein the mains in the event of a rise in pressure in thecombustion-chamber. y

, The voperation ot" this device is as follows: 'lhc' gas from themainis admitted to the burners L and ignited.. The door R is open whilethis combustion is taking place, and thc valve e is also open, so that adraft is provided through the combustion-chamber. When sufficient steanihas thus been generated in the boiler or chamber J, the engine isstarted. lVhen by thc operation of the engine a suppl y of airand gas isforced through the pipe C and the burners G', it is ignited and the doorB and valve e are closed, and the connection with the gas-main cut ott.The expanded products of'conibustion, together with the steam generatedby the combustion entering the engine-cylinders then maintain the enginein operation.

It will be seen that by the construction above described provision ismade in every practicable way of utilizing the waste heat andecono'mizing power. The devices which enter into the combination ,whichour invention involves may be'greatly .varied in con? struction, and wedo not limit ourselves to the special construction shown, as Willbe seen'from the subjoined claims.

It `vill be seen that the construction above described obviates thenecessity o f an indeendent boiler or source of power for starting theengine, while the steam generated in the chamber .T tot only suppliesthe necessary `That We clairn is-. 4 1. The combination, with an engineof the kind described, of a boiler o'r water-chamber, and acombustion-chamber inclosed or surrounded thereby, connections from bothchambers to the engine, and two sets of burners contained in thecombustiorechamber, one set bei-ng suppLed by a gas or fuelindependently of the engine, the other being fed by gas or fuel by ti eoperation o1.' the engine, and means forcontrolling the supply of fue tosaid burners, as setforth.

2. The combination, with an engine of the kind described, of aWater-chamber or boiler, and a combustion-chamber inclosed or surroundedthereby,connections from both chambers to thc engine, two sets ofburners conlubrication',but assists in driving the engine.-

tained in the combustion-chamber, and pipes' or tubes supplying gas orsimilar fuel to said (burners, one leading direct-ly from a gas-main orsource of supply, the other-'being con-V nected with apumping-cylinder-in the en-' 4. The combination, with an engine of thekind described, of` a steam boiler or generator connected with theengine-cylinders, a combustion-chamber inclosed or surrounded by theboiler and provided with draft-passages capable of being closedair-tight, two sets of `burners in thecombustion-chamber, one confnected with a supply of gas alone, the other with a supply of air andgas under pressure, as set forth.

5. The combination, with an engine of the kind described, of awater-chamber o'r boiler, a combustion-chamber inclosed or surrounded bythe same, a feed-water chamber connected to the boiler, and theexhaust-pipe arranged to heat the water in said chamber as setforth.'

6. The combination, with the cylinders of an air and gas engine, of acombined 'boiler g and combustionchainber, valve-controlled connections-for thesteam and expanded gases between the cylinders and thesaidchambers, and independent sourc'fesj of heat for generatingthestearn, as herein set forth. 7. The combination, with the cylindersof an air and gas engine, of a boiler for generating steam connectedtherewith, a combustionchamber provided with dra'ftpas sages closingair-tight, and also connected with said cylinders, and two sets ofburners in the combustion-chamber, one adapted to be supplied with gasor similar fuel and the other with a mixture of gas and air.

ALBERT SCI-IMID.4 JOHN CHARLES BECKFELD.

iVitnessesz' J. M. TATE; J r., W. D. UPTEGRAFF.

